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    Work: Find the solution of equation （24.2-x）/x*100% = 1.7% .
    Question type: Equation
    Solution:Original question:

(

121 5

−

x

)

÷

x

×

100 100

=

17 1000

Multiply both sides of the equation by:

x

(

121 5

−

x

)

×

100 100

=

17 1000

x

    Remove a bracket on the left of the equation:：

121 5

×

100 100

−

x

×

100 100

=

17 1000

x

    The equation is reduced to :

121 5

−

x

×

100 100

=

17 1000

x

    Transposition :

-

100 100

x

−

17 1000

x

=

-

121 5

    Combine the items on the left of the equation:

-

1017 1000

x

=

-

121 5

    By shifting the terms and changing the symbols on toth sides of the equation, we obtain :

121 5

=

1017 1000

x

    If the left side of the equation is equal to the right side, then the right side must also be equal to the left side, that is :

1017 1000

x

=

121 5

    The coefficient of the unknown number is reduced to 1 :

x

=

121 5

÷

1017 1000

=

121 5

×

1000 1017

=

121

×

200 1017

    We obtained :

x

=

24200 1017

    This is the solution of the equation.

    Convert the result to decimal form :

x

=

23.795477

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